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Vgradnja algoritma za kompenzacijo elastične povračljivosti preoblikovane pločevine v programsko okolje ABAQUS
ID Okršlar, Matevž (Author), ID Halilovič, Miroslav (Mentor) More about this mentor... This link opens in a new window

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Abstract
V današnjem času izdelki v številnih velikoserijskih industrijah v veliki meri temeljijo na preoblikovanju kovinskih materialov. Procesi preoblikovanja kovin v teh panogah so zahtevni zaradi težnje po zmanjševanju stroškov, visokih tolerančnih zahtevah in uporabe visoko trdnostnih jekel, ki izkazujejo večjo stopnjo elastične povračljivosti. S stališča stroškov je ključno, da vpliv elastične povračljivosti s pomočjo virtualnih simulacijsko-optimizacijskih orodij vzamemo v obzir že med samim konstruiranjem orodja in tako zmanjšamo verjetnost dragih popravkov dejanskega orodja v poznejših fazah izdelave. V delu predstavljamo razvito M-DA optimizacijsko metodo, ki naslavlja omenjeno problematiko, saj omogoča enostavno optimizacijo 2D preoblikovalnih problemov. Z metodo upravljamo preko namenskega grafičnega vmesnika, omogoča pa avtomatsko kompenziranje orodja na bazi simulacije preoblikovanja. Predstavljen je princip delovanja metode in njena implementacija v Abaqus, ki je izvedena s programskim jezikom Python. Implementacijske rešitve so idejno opisane, pomembnejše pa so tudi predstavljene na konkretnih primerih. Delovanje je prikazano na preizkusnih primerih, ki po izvedenem optimizacijskem procesu izkazujejo občutno zmanjšanje odstopanj od željene oblike.

Language:Slovenian
Keywords:optimizacija preoblikovalnega orodja, elastična povračljivost, modificirana DA metoda, preoblikovanje pločevine, Abaqus Scripting, Python
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FS - Faculty of Mechanical Engineering
Place of publishing:Ljubljana
Publisher:[M. Okršlar]
Year:2019
Number of pages:XX, 63 str.
PID:20.500.12556/RUL-108213 This link opens in a new window
UDC:621.98:539.3:004.942(043.2)
COBISS.SI-ID:16679451 This link opens in a new window
Publication date in RUL:21.06.2019
Views:2233
Downloads:280
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Secondary language

Language:English
Title:Implementation of Springback Compensation Algorithm into ABAQUS Software
Abstract:
Nowadays many products made in high-volume manufacturing industries are based on metal forming, which is becoming increasingly complex due to cost reductions, demands for tight tolerances and use of advanced high-strength steels, which exhibit a very high level of springback. From the point of view of cost reductions, it is essential that springback is taken into consideration during tool design with the help of virtual simulation and optimization tools thus minimizing the probability of costly modifications on the actual tool in later production phases. In this thesis we present the M-DA springback optimization tool, which addresses the aforementioned problem providing the possibility of a relatively easy and effective forming tool geometry optimization for 2D forming problems. The M-DA can be used through GUI and enables an automatic tool compensation based on a pre-defined forming simulation. The M-DA principles are presented in detail as is its Python-based implementation into Abaqus. All implementation solutions are described in general terms, while the key ones are explained in more detail and using concrete examples. Lastly, the M-DA optimization results are shown in four test cases which exhibit significantly reduced deviations from desired shape.

Keywords:forming tool optimization, springback, modified DA method, sheet metal forming, Abaqus Scripting, Python

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